Re: qwt-20050831 compiles and runs under IRIX and MSVC6 for 4.1.0

[Uwe R. <Uwe...@ti...>]

Hi Rich,

> FYI I was able to get qwt-20050831 to compile and run under QT 4.1.0.

Well there are a couple of differences between 4.0.x and 4.1.0. So you need 
Qwt from CVS, or wait until I will release a new snapshot. I don't go to work 
in the first week next year, so I hope there will be time for releasing it.

> I did have to change a line in sliders.cpp to get MSVC6
> to compile it.

The real bug is in sliders.h. The default parameter initialization has to be 
done there not in the cpp file. Fixed in CVS.

> The bode plot doesn't paint until one clicks on it on SGI IRIX.
> Then fails to repaint properly when it is resized or covered
> and exposed and the cursor label wipes out the portions of
> the plot it moves over.  I suspect this is an SGI IRIX QT4
> problem since it doesn't happen with QT3.

You will see this effect whenever you have a picker with position tracker, or 
rubberband. The meaning of QWidget::setMask(QRegion()) in Qt 4.1 is the 
opposite to what it was in Qt 4.0.x. (In Qt 4.0 it makes the picker widget 
invisible, in 4.1 it disables masking and thus covers the plot canvas 
completely.) 

I had changed the implementation of QwtPicker to something that works for Qt 
4.0.x + 4.1.0 a couple of weeks ago.

> Also I'm still having the problem with the axis label clipping
> we discussed in our 09/13/05 and 09/15/05 correspondence.

Guess the problem disappears with using the current CVS. Unfortunately this is 
not fixed, it is just that the QwtText changes result in wasting a couple of 
pixels at the top of the vertical scales. Guess the problem will reappear, 
when the QwtText changes are completed.

Uwe